Thermoluminescence properties of rare earth doped lithium magnesium borate phosphors

Autor:	V. Ramasamy, O. Annalakshmi, S.R. Anishia, M.T. Jose
Rok vydání:	2011
Předmět:	Photoluminescence Materials science Dopant Doping Biophysics Analytical chemistry chemistry.chemical_element Terbium Phosphor General Chemistry Condensed Matter Physics Biochemistry Thermoluminescence Atomic and Molecular Physics and Optics chemistry Emission spectrum Boron Nuclear chemistry
Zdroj:	Journal of Luminescence. 131:2492-2498
ISSN:	0022-2313
DOI:	10.1016/j.jlumin.2011.06.019
Popis:	This paper reports the thermoluminescence (TL) properties of rare earth doped lithium magnesium borate (LMB) polycrystalline phosphor. LMB phosphor has been prepared by high temperature solid state diffusion method. Among all the rare earth doped LMB phosphors, terbium doped material has shown maximum TL sensitivity with a broad dosimetric glow peak at 240 °C. near the tissue equivalent TL phosphor with terbium dopant has about four times the TL sensitivity of TLD-100. The main dosimetric properties such as glow curve stability, TL response versus absorbed dose, post-irradiation storage stability, and reusability are investigated. This TL material has a linear dose response up to 10 3 Gy, negligible storage fading and a simple annealing procedure for reuse. The TL emission spectra of LMB:Tb 3+ showed broad green emission at 544 nm, which merged with host emission. The characteristic Tb 3+ emissions are seen in the photoluminescence (PL) spectra.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cd08168abd6c59bae69ca063a044ee4d https://doi.org/10.1016/j.jlumin.2011.06.019 Zobrazit plný text záznamu Full Text from ScienceDirect